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<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<title>gr-rest-api-interface</title>

<script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
<script src="../../../bower_components/web-component-tester/browser.js"></script>
<link rel="import" href="../../../test/common-test-setup.html"/>
<script src="../../../scripts/util.js"></script>

<link rel="import" href="gr-rest-api-interface.html">

<script>void(0);</script>

<test-fixture id="basic">
  <template>
    <gr-rest-api-interface></gr-rest-api-interface>
  </template>
</test-fixture>

<script>
  suite('gr-rest-api-interface tests', () => {
    let element;
    let sandbox;
    let ctr = 0;

    setup(() => {
      // Modify CANONICAL_PATH to effectively reset cache.
      ctr += 1;
      window.CANONICAL_PATH = `test${ctr}`;

      sandbox = sinon.sandbox.create();
      element = fixture('basic');
      element._projectLookup = {};
      const testJSON = ')]}\'\n{"hello": "bonjour"}';
      sandbox.stub(window, 'fetch').returns(Promise.resolve({
        ok: true,
        text() {
          return Promise.resolve(testJSON);
        },
      }));
    });

    teardown(() => {
      sandbox.restore();
    });

    test('JSON prefix is properly removed', done => {
      element._fetchJSON('/dummy/url').then(obj => {
        assert.deepEqual(obj, {hello: 'bonjour'});
        done();
      });
    });

    test('cached results', done => {
      let n = 0;
      sandbox.stub(element, '_fetchJSON', () => {
        return Promise.resolve(++n);
      });
      const promises = [];
      promises.push(element._fetchSharedCacheURL('/foo'));
      promises.push(element._fetchSharedCacheURL('/foo'));
      promises.push(element._fetchSharedCacheURL('/foo'));

      Promise.all(promises).then(results => {
        assert.deepEqual(results, [1, 1, 1]);
        element._fetchSharedCacheURL('/foo').then(foo => {
          assert.equal(foo, 1);
          done();
        });
      });
    });

    test('cached promise', done => {
      const promise = Promise.reject(new Error('foo'));
      element._cache.set('/foo', promise);
      element._fetchSharedCacheURL({url: '/foo'}).catch(p => {
        assert.equal(p.message, 'foo');
        done();
      });
    });

    test('cache invalidation', () => {
      element._cache.set('/foo/bar', 1);
      element._cache.set('/bar', 2);
      element._sharedFetchPromises['/foo/bar'] = 3;
      element._sharedFetchPromises['/bar'] = 4;
      element._invalidateSharedFetchPromisesPrefix('/foo/');
      assert.isFalse(element._cache.has('/foo/bar'));
      assert.isTrue(element._cache.has('/bar'));
      assert.isUndefined(element._sharedFetchPromises['/foo/bar']);
      assert.strictEqual(4, element._sharedFetchPromises['/bar']);
    });

    test('params are properly encoded', () => {
      let url = element._urlWithParams('/path/', {
        sp: 'hola',
        gr: 'guten tag',
        noval: null,
      });
      assert.equal(url,
          window.CANONICAL_PATH + '/path/?sp=hola&gr=guten%20tag&noval');

      url = element._urlWithParams('/path/', {
        sp: 'hola',
        en: ['hey', 'hi'],
      });
      assert.equal(url, window.CANONICAL_PATH + '/path/?sp=hola&en=hey&en=hi');

      // Order must be maintained with array params.
      url = element._urlWithParams('/path/', {
        l: ['c', 'b', 'a'],
      });
      assert.equal(url, window.CANONICAL_PATH + '/path/?l=c&l=b&l=a');
    });

    test('request callbacks can be canceled', done => {
      let cancelCalled = false;
      window.fetch.returns(Promise.resolve({
        body: {
          cancel() { cancelCalled = true; },
        },
      }));
      const cancelCondition = () => { return true; };
      element._fetchJSON({url: '/dummy/url', cancelCondition}).then(
          obj => {
            assert.isUndefined(obj);
            assert.isTrue(cancelCalled);
            done();
          });
    });

    test('parent diff comments are properly grouped', done => {
      sandbox.stub(element, '_fetchJSON', () => {
        return Promise.resolve({
          '/COMMIT_MSG': [],
          'sieve.go': [
            {
              updated: '2017-02-03 22:32:28.000000000',
              message: 'this isn’t quite right',
            },
            {
              side: 'PARENT',
              message: 'how did this work in the first place?',
              updated: '2017-02-03 22:33:28.000000000',
            },
          ],
        });
      });
      element._getDiffComments('42', '', 'PARENT', 1, 'sieve.go').then(
          obj => {
            assert.equal(obj.baseComments.length, 1);
            assert.deepEqual(obj.baseComments[0], {
              side: 'PARENT',
              message: 'how did this work in the first place?',
              path: 'sieve.go',
              updated: '2017-02-03 22:33:28.000000000',
            });
            assert.equal(obj.comments.length, 1);
            assert.deepEqual(obj.comments[0], {
              message: 'this isn’t quite right',
              path: 'sieve.go',
              updated: '2017-02-03 22:32:28.000000000',
            });
            done();
          });
    });

    test('_setRange', () => {
      const comments = [
        {
          id: 1,
          side: 'PARENT',
          message: 'how did this work in the first place?',
          updated: '2017-02-03 22:32:28.000000000',
          range: {
            start_line: 1,
            start_character: 1,
            end_line: 2,
            end_character: 1,
          },
        },
        {
          id: 2,
          in_reply_to: 1,
          message: 'this isn’t quite right',
          updated: '2017-02-03 22:33:28.000000000',
        },
      ];
      const expectedResult = {
        id: 2,
        in_reply_to: 1,
        message: 'this isn’t quite right',
        updated: '2017-02-03 22:33:28.000000000',
        range: {
          start_line: 1,
          start_character: 1,
          end_line: 2,
          end_character: 1,
        },
      };
      const comment = comments[1];
      assert.deepEqual(element._setRange(comments, comment), expectedResult);
    });

    test('_setRanges', () => {
      const comments = [
        {
          id: 3,
          in_reply_to: 2,
          message: 'this isn’t quite right either',
          updated: '2017-02-03 22:34:28.000000000',
        },
        {
          id: 2,
          in_reply_to: 1,
          message: 'this isn’t quite right',
          updated: '2017-02-03 22:33:28.000000000',
        },
        {
          id: 1,
          side: 'PARENT',
          message: 'how did this work in the first place?',
          updated: '2017-02-03 22:32:28.000000000',
          range: {
            start_line: 1,
            start_character: 1,
            end_line: 2,
            end_character: 1,
          },
        },
      ];
      const expectedResult = [
        {
          id: 1,
          side: 'PARENT',
          message: 'how did this work in the first place?',
          updated: '2017-02-03 22:32:28.000000000',
          range: {
            start_line: 1,
            start_character: 1,
            end_line: 2,
            end_character: 1,
          },
        },
        {
          id: 2,
          in_reply_to: 1,
          message: 'this isn’t quite right',
          updated: '2017-02-03 22:33:28.000000000',
          range: {
            start_line: 1,
            start_character: 1,
            end_line: 2,
            end_character: 1,
          },
        },
        {
          id: 3,
          in_reply_to: 2,
          message: 'this isn’t quite right either',
          updated: '2017-02-03 22:34:28.000000000',
          range: {
            start_line: 1,
            start_character: 1,
            end_line: 2,
            end_character: 1,
          },
        },
      ];
      assert.deepEqual(element._setRanges(comments), expectedResult);
    });

    test('differing patch diff comments are properly grouped', done => {
      sandbox.stub(element, 'getFromProjectLookup')
          .returns(Promise.resolve('test'));
      sandbox.stub(element, '_fetchJSON', request => {
        const url = request.url;
        if (url === '/changes/test~42/revisions/1') {
          return Promise.resolve({
            '/COMMIT_MSG': [],
            'sieve.go': [
              {
                message: 'this isn’t quite right',
                updated: '2017-02-03 22:32:28.000000000',
              },
              {
                side: 'PARENT',
                message: 'how did this work in the first place?',
                updated: '2017-02-03 22:33:28.000000000',
              },
            ],
          });
        } else if (url === '/changes/test~42/revisions/2') {
          return Promise.resolve({
            '/COMMIT_MSG': [],
            'sieve.go': [
              {
                message: 'What on earth are you thinking, here?',
                updated: '2017-02-03 22:32:28.000000000',
              },
              {
                side: 'PARENT',
                message: 'Yeah not sure how this worked either?',
                updated: '2017-02-03 22:33:28.000000000',
              },
              {
                message: '¯\\_(ツ)_/¯',
                updated: '2017-02-04 22:33:28.000000000',
              },
            ],
          });
        }
      });
      element._getDiffComments('42', '', 1, 2, 'sieve.go').then(
          obj => {
            assert.equal(obj.baseComments.length, 1);
            assert.deepEqual(obj.baseComments[0], {
              message: 'this isn’t quite right',
              path: 'sieve.go',
              updated: '2017-02-03 22:32:28.000000000',
            });
            assert.equal(obj.comments.length, 2);
            assert.deepEqual(obj.comments[0], {
              message: 'What on earth are you thinking, here?',
              path: 'sieve.go',
              updated: '2017-02-03 22:32:28.000000000',
            });
            assert.deepEqual(obj.comments[1], {
              message: '¯\\_(ツ)_/¯',
              path: 'sieve.go',
              updated: '2017-02-04 22:33:28.000000000',
            });
            done();
          });
    });

    test('special file path sorting', () => {
      assert.deepEqual(
          ['.b', '/COMMIT_MSG', '.a', 'file'].sort(
              element.specialFilePathCompare),
          ['/COMMIT_MSG', '.a', '.b', 'file']);

      assert.deepEqual(
          ['.b', '/COMMIT_MSG', 'foo/bar/baz.cc', 'foo/bar/baz.h'].sort(
              element.specialFilePathCompare),
          ['/COMMIT_MSG', '.b', 'foo/bar/baz.h', 'foo/bar/baz.cc']);

      assert.deepEqual(
          ['.b', '/COMMIT_MSG', 'foo/bar/baz.cc', 'foo/bar/baz.hpp'].sort(
              element.specialFilePathCompare),
          ['/COMMIT_MSG', '.b', 'foo/bar/baz.hpp', 'foo/bar/baz.cc']);

      assert.deepEqual(
          ['.b', '/COMMIT_MSG', 'foo/bar/baz.cc', 'foo/bar/baz.hxx'].sort(
              element.specialFilePathCompare),
          ['/COMMIT_MSG', '.b', 'foo/bar/baz.hxx', 'foo/bar/baz.cc']);

      assert.deepEqual(
          ['foo/bar.h', 'foo/bar.hxx', 'foo/bar.hpp'].sort(
              element.specialFilePathCompare),
          ['foo/bar.h', 'foo/bar.hpp', 'foo/bar.hxx']);

      // Regression test for Issue 4448.
      assert.deepEqual(
          [
            'minidump/minidump_memory_writer.cc',
            'minidump/minidump_memory_writer.h',
            'minidump/minidump_thread_writer.cc',
            'minidump/minidump_thread_writer.h',
          ].sort(element.specialFilePathCompare),
          [
            'minidump/minidump_memory_writer.h',
            'minidump/minidump_memory_writer.cc',
            'minidump/minidump_thread_writer.h',
            'minidump/minidump_thread_writer.cc',
          ]);

      // Regression test for Issue 4545.
      assert.deepEqual(
          [
            'task_test.go',
            'task.go',
          ].sort(element.specialFilePathCompare),
          [
            'task.go',
            'task_test.go',
          ]);
    });

    suite('rebase action', () => {
      let resolve_fetchJSON;
      setup(() => {
        sandbox.stub(element, '_fetchJSON').returns(
            new Promise(resolve => {
              resolve_fetchJSON = resolve;
            }));
      });

      test('no rebase on current', done => {
        element.getChangeRevisionActions('42', '1337').then(
            response => {
              assert.isTrue(response.rebase.enabled);
              assert.isFalse(response.rebase.rebaseOnCurrent);
              done();
            });
        resolve_fetchJSON({rebase: {}});
      });

      test('rebase on current', done => {
        element.getChangeRevisionActions('42', '1337').then(
            response => {
              assert.isTrue(response.rebase.enabled);
              assert.isTrue(response.rebase.rebaseOnCurrent);
              done();
            });
        resolve_fetchJSON({rebase: {enabled: true}});
      });
    });


    test('server error', done => {
      const getResponseObjectStub = sandbox.stub(element, 'getResponseObject');
      window.fetch.returns(Promise.resolve({ok: false}));
      const serverErrorEventPromise = new Promise(resolve => {
        element.addEventListener('server-error', resolve);
      });

      element._fetchJSON({}).then(response => {
        assert.isUndefined(response);
        assert.isTrue(getResponseObjectStub.notCalled);
        serverErrorEventPromise.then(() => done());
      });
    });

    test('auth failure', done => {
      const fakeAuthResponse = {
        ok: false,
        status: 403,
      };
      window.fetch.onFirstCall().returns(
          Promise.reject(new Error('Failed to fetch')));
      window.fetch.onSecondCall().returns(Promise.resolve(fakeAuthResponse));
      // Emulate logged in.
      element._cache.set('/accounts/self/detail', {});
      const serverErrorStub = sandbox.stub();
      element.addEventListener('server-error', serverErrorStub);
      const authErrorStub = sandbox.stub();
      element.addEventListener('auth-error', authErrorStub);
      element._fetchJSON('/bar').then(r => {
        flush(() => {
          assert.isTrue(authErrorStub.called);
          assert.isFalse(serverErrorStub.called);
          assert.isFalse(element._cache.has('/accounts/self/detail'));
          done();
        });
      });
    });

    test('checkCredentials', done => {
      const responses = [
        {
          ok: false,
          status: 403,
          text() { return Promise.resolve(); },
        },
        {
          ok: true,
          status: 200,
          text() { return Promise.resolve(')]}\'{}'); },
        },
      ];
      window.fetch.restore();
      sandbox.stub(window, 'fetch', url => {
        if (url === window.CANONICAL_PATH + '/accounts/self/detail') {
          return Promise.resolve(responses.shift());
        }
      });

      element.getLoggedIn().then(account => {
        assert.isNotOk(account);
        element.checkCredentials().then(account => {
          assert.isOk(account);
          done();
        });
      });
    });

    test('checkCredentials promise rejection', () => {
      window.fetch.restore();
      element._cache.set('/accounts/self/detail', true);
      sandbox.spy(element, 'checkCredentials');
      sandbox.stub(window, 'fetch', url => {
        return Promise.reject(new Error('Failed to fetch'));
      });
      return element.getConfig(true)
          .catch(err => undefined)
          .then(() => {
            // When the top-level fetch call throws an error, it invokes
            // checkCredentials, which in turn makes another fetch call.
            // The second fetch call also fails, which leads to a second
            // invocation of checkCredentials, which should immediately
            // return instead of making further fetch calls.
            assert.isTrue(element.checkCredentials.calledTwice);
            assert.isTrue(window.fetch.calledTwice);
          });
    });

    test('legacy n,z key in change url is replaced', () => {
      const stub = sandbox.stub(element, '_fetchJSON')
          .returns(Promise.resolve([]));
      element.getChanges(1, null, 'n,z');
      assert.equal(stub.lastCall.args[0].params.S, 0);
    });

    test('saveDiffPreferences invalidates cache line', () => {
      const cacheKey = '/accounts/self/preferences.diff';
      sandbox.stub(element, '_send');
      element._cache.set(cacheKey, {tab_size: 4});
      element.saveDiffPreferences({tab_size: 8});
      assert.isTrue(element._send.called);
      assert.isFalse(element._cache.has(cacheKey));
    });

    test('getAccount when resp is null does not add anything to the cache',
        done => {
          const cacheKey = '/accounts/self/detail';
          const stub = sandbox.stub(element, '_fetchSharedCacheURL',
              () => Promise.resolve());

          element.getAccount().then(() => {
            assert.isTrue(element._fetchSharedCacheURL.called);
            assert.isFalse(element._cache.has(cacheKey));
            done();
          });

          element._cache.set(cacheKey, 'fake cache');
          stub.lastCall.args[0].errFn();
        });

    test('getAccount does not add to the cache when resp.status is 403',
        done => {
          const cacheKey = '/accounts/self/detail';
          const stub = sandbox.stub(element, '_fetchSharedCacheURL',
              () => Promise.resolve());

          element.getAccount().then(() => {
            assert.isTrue(element._fetchSharedCacheURL.called);
            assert.isFalse(element._cache.has(cacheKey));
            done();
          });
          element._cache.set(cacheKey, 'fake cache');
          stub.lastCall.args[0].errFn({status: 403});
        });

    test('getAccount when resp is successful', done => {
      const cacheKey = '/accounts/self/detail';
      const stub = sandbox.stub(element, '_fetchSharedCacheURL',
          () => Promise.resolve());

      element.getAccount().then(response => {
        assert.isTrue(element._fetchSharedCacheURL.called);
        assert.equal(element._cache.get(cacheKey), 'fake cache');
        done();
      });
      element._cache.set(cacheKey, 'fake cache');

      stub.lastCall.args[0].errFn({});
    });

    const preferenceSetup = function(testJSON, loggedIn, smallScreen) {
      sandbox.stub(element, 'getLoggedIn', () => {
        return Promise.resolve(loggedIn);
      });
      sandbox.stub(element, '_isNarrowScreen', () => {
        return smallScreen;
      });
      sandbox.stub(element, '_fetchSharedCacheURL', () => {
        return Promise.resolve(testJSON);
      });
    };

    test('getPreferences returns correctly on small screens logged in',
        done => {
          const testJSON = {diff_view: 'SIDE_BY_SIDE'};
          const loggedIn = true;
          const smallScreen = true;

          preferenceSetup(testJSON, loggedIn, smallScreen);

          element.getPreferences().then(obj => {
            assert.equal(obj.default_diff_view, 'UNIFIED_DIFF');
            assert.equal(obj.diff_view, 'SIDE_BY_SIDE');
            done();
          });
        });

    test('getPreferences returns correctly on small screens not logged in',
        done => {
          const testJSON = {diff_view: 'SIDE_BY_SIDE'};
          const loggedIn = false;
          const smallScreen = true;

          preferenceSetup(testJSON, loggedIn, smallScreen);
          element.getPreferences().then(obj => {
            assert.equal(obj.default_diff_view, 'UNIFIED_DIFF');
            assert.equal(obj.diff_view, 'SIDE_BY_SIDE');
            done();
          });
        });

    test('getPreferences returns correctly on larger screens logged in',
        done => {
          const testJSON = {diff_view: 'UNIFIED_DIFF'};
          const loggedIn = true;
          const smallScreen = false;

          preferenceSetup(testJSON, loggedIn, smallScreen);

          element.getPreferences().then(obj => {
            assert.equal(obj.default_diff_view, 'UNIFIED_DIFF');
            assert.equal(obj.diff_view, 'UNIFIED_DIFF');
            done();
          });
        });

    test('getPreferences returns correctly on larger screens not logged in',
        done => {
          const testJSON = {diff_view: 'UNIFIED_DIFF'};
          const loggedIn = false;
          const smallScreen = false;

          preferenceSetup(testJSON, loggedIn, smallScreen);

          element.getPreferences().then(obj => {
            assert.equal(obj.default_diff_view, 'SIDE_BY_SIDE');
            assert.equal(obj.diff_view, 'SIDE_BY_SIDE');
            done();
          });
        });

    test('savPreferences normalizes download scheme', () => {
      sandbox.stub(element, '_send');
      element.savePreferences({download_scheme: 'HTTP'});
      assert.isTrue(element._send.called);
      assert.equal(element._send.lastCall.args[0].body.download_scheme, 'http');
    });

    test('getDiffPreferences returns correct defaults', done => {
      sandbox.stub(element, 'getLoggedIn', () => Promise.resolve(false));

      element.getDiffPreferences().then(obj => {
        assert.equal(obj.auto_hide_diff_table_header, true);
        assert.equal(obj.context, 10);
        assert.equal(obj.cursor_blink_rate, 0);
        assert.equal(obj.font_size, 12);
        assert.equal(obj.ignore_whitespace, 'IGNORE_NONE');
        assert.equal(obj.intraline_difference, true);
        assert.equal(obj.line_length, 100);
        assert.equal(obj.line_wrapping, false);
        assert.equal(obj.show_line_endings, true);
        assert.equal(obj.show_tabs, true);
        assert.equal(obj.show_whitespace_errors, true);
        assert.equal(obj.syntax_highlighting, true);
        assert.equal(obj.tab_size, 8);
        assert.equal(obj.theme, 'DEFAULT');
        done();
      });
    });

    test('saveDiffPreferences set show_tabs to false', () => {
      sandbox.stub(element, '_send');
      element.saveDiffPreferences({show_tabs: false});
      assert.isTrue(element._send.called);
      assert.equal(element._send.lastCall.args[0].body.show_tabs, false);
    });

    test('getEditPreferences returns correct defaults', done => {
      sandbox.stub(element, 'getLoggedIn', () => {
        return Promise.resolve(false);
      });

      element.getEditPreferences().then(obj => {
        assert.equal(obj.auto_close_brackets, false);
        assert.equal(obj.cursor_blink_rate, 0);
        assert.equal(obj.hide_line_numbers, false);
        assert.equal(obj.hide_top_menu, false);
        assert.equal(obj.indent_unit, 2);
        assert.equal(obj.indent_with_tabs, false);
        assert.equal(obj.key_map_type, 'DEFAULT');
        assert.equal(obj.line_length, 100);
        assert.equal(obj.line_wrapping, false);
        assert.equal(obj.match_brackets, true);
        assert.equal(obj.show_base, false);
        assert.equal(obj.show_tabs, true);
        assert.equal(obj.show_whitespace_errors, true);
        assert.equal(obj.syntax_highlighting, true);
        assert.equal(obj.tab_size, 8);
        assert.equal(obj.theme, 'DEFAULT');
        done();
      });
    });

    test('saveEditPreferences set show_tabs to false', () => {
      sandbox.stub(element, '_send');
      element.saveEditPreferences({show_tabs: false});
      assert.isTrue(element._send.called);
      assert.equal(element._send.lastCall.args[0].body.show_tabs, false);
    });

    test('confirmEmail', () => {
      sandbox.spy(element, '_send');
      element.confirmEmail('foo');
      assert.isTrue(element._send.calledOnce);
      assert.equal(element._send.lastCall.args[0].method, 'PUT');
      assert.equal(element._send.lastCall.args[0].url,
          '/config/server/email.confirm');
      assert.deepEqual(element._send.lastCall.args[0].body, {token: 'foo'});
    });

    test('setAccountStatus', () => {
      sandbox.stub(element, '_send').returns(Promise.resolve('OOO'));
      element._cache.set('/accounts/self/detail', {});
      return element.setAccountStatus('OOO').then(() => {
        assert.isTrue(element._send.calledOnce);
        assert.equal(element._send.lastCall.args[0].method, 'PUT');
        assert.equal(element._send.lastCall.args[0].url,
            '/accounts/self/status');
        assert.deepEqual(element._send.lastCall.args[0].body,
            {status: 'OOO'});
        assert.deepEqual(element._cache.get('/accounts/self/detail'),
            {status: 'OOO'});
      });
    });

    suite('draft comments', () => {
      test('_sendDiffDraftRequest pending requests tracked', () => {
        const obj = element._pendingRequests;
        sandbox.stub(element, '_getChangeURLAndSend', () => mockPromise());
        assert.notOk(element.hasPendingDiffDrafts());

        element._sendDiffDraftRequest(null, null, null, {});
        assert.equal(obj.sendDiffDraft.length, 1);
        assert.isTrue(!!element.hasPendingDiffDrafts());

        element._sendDiffDraftRequest(null, null, null, {});
        assert.equal(obj.sendDiffDraft.length, 2);
        assert.isTrue(!!element.hasPendingDiffDrafts());

        for (const promise of obj.sendDiffDraft) { promise.resolve(); }

        return element.awaitPendingDiffDrafts().then(() => {
          assert.equal(obj.sendDiffDraft.length, 0);
          assert.isFalse(!!element.hasPendingDiffDrafts());
        });
      });

      suite('_failForCreate200', () => {
        test('_sendDiffDraftRequest checks for 200 on create', () => {
          const sendPromise = Promise.resolve();
          sandbox.stub(element, '_getChangeURLAndSend').returns(sendPromise);
          const failStub = sandbox.stub(element, '_failForCreate200')
              .returns(Promise.resolve());
          return element._sendDiffDraftRequest('PUT', 123, 4, {}).then(() => {
            assert.isTrue(failStub.calledOnce);
            assert.isTrue(failStub.calledWithExactly(sendPromise));
          });
        });

        test('_sendDiffDraftRequest no checks for 200 on non create', () => {
          sandbox.stub(element, '_getChangeURLAndSend')
              .returns(Promise.resolve());
          const failStub = sandbox.stub(element, '_failForCreate200')
              .returns(Promise.resolve());
          return element._sendDiffDraftRequest('PUT', 123, 4, {id: '123'})
              .then(() => {
                assert.isFalse(failStub.called);
              });
        });

        test('_failForCreate200 fails on 200', done => {
          const result = {
            ok: true,
            status: 200,
            headers: {entries: () => [
              ['Set-CoOkiE', 'secret'],
              ['Innocuous', 'hello'],
            ]},
          };
          element._failForCreate200(Promise.resolve(result)).then(() => {
            assert.isTrue(false, 'Promise should not resolve');
          }).catch(e => {
            assert.isOk(e);
            assert.include(e.message, 'Saving draft resulted in HTTP 200');
            assert.include(e.message, 'hello');
            assert.notInclude(e.message, 'secret');
            done();
          });
        });

        test('_failForCreate200 does not fail on 201', done => {
          const result = {
            ok: true,
            status: 201,
            headers: {entries: () => []},
          };
          element._failForCreate200(Promise.resolve(result)).then(() => {
            done();
          }).catch(e => {
            assert.isTrue(false, 'Promise should not fail');
          });
        });
      });
    });

    test('saveChangeEdit', () => {
      element._projectLookup = {1: 'test'};
      const change_num = '1';
      const file_name = 'index.php';
      const file_contents = '<?php';
      sandbox.stub(element, '_send').returns(
          Promise.resolve([change_num, file_name, file_contents]));
      sandbox.stub(element, 'getResponseObject')
          .returns(Promise.resolve([change_num, file_name, file_contents]));
      element._cache.set('/changes/' + change_num + '/edit/' + file_name, {});
      return element.saveChangeEdit(change_num, file_name, file_contents)
          .then(() => {
            assert.isTrue(element._send.calledOnce);
            assert.equal(element._send.lastCall.args[0].method, 'PUT');
            assert.equal(element._send.lastCall.args[0].url,
                '/changes/test~1/edit/' + file_name);
            assert.equal(element._send.lastCall.args[0].body, file_contents);
          });
    });

    test('putChangeCommitMessage', () => {
      element._projectLookup = {1: 'test'};
      const change_num = '1';
      const message = 'this is a commit message';
      sandbox.stub(element, '_send').returns(
          Promise.resolve([change_num, message]));
      sandbox.stub(element, 'getResponseObject')
          .returns(Promise.resolve([change_num, message]));
      element._cache.set('/changes/' + change_num + '/message', {});
      return element.putChangeCommitMessage(change_num, message).then(() => {
        assert.isTrue(element._send.calledOnce);
        assert.equal(element._send.lastCall.args[0].method, 'PUT');
        assert.equal(element._send.lastCall.args[0].url,
            '/changes/test~1/message');
        assert.deepEqual(element._send.lastCall.args[0].body, {message});
      });
    });

    test('startWorkInProgress', () => {
      const sendStub = sandbox.stub(element, '_getChangeURLAndSend')
          .returns(Promise.resolve('ok'));
      element.startWorkInProgress('42');
      assert.isTrue(sendStub.calledOnce);
      assert.equal(sendStub.lastCall.args[0].changeNum, '42');
      assert.equal(sendStub.lastCall.args[0].method, 'POST');
      assert.isNotOk(sendStub.lastCall.args[0].patchNum);
      assert.equal(sendStub.lastCall.args[0].endpoint, '/wip');
      assert.deepEqual(sendStub.lastCall.args[0].body, {});

      element.startWorkInProgress('42', 'revising...');
      assert.isTrue(sendStub.calledTwice);
      assert.equal(sendStub.lastCall.args[0].changeNum, '42');
      assert.equal(sendStub.lastCall.args[0].method, 'POST');
      assert.isNotOk(sendStub.lastCall.args[0].patchNum);
      assert.equal(sendStub.lastCall.args[0].endpoint, '/wip');
      assert.deepEqual(sendStub.lastCall.args[0].body,
          {message: 'revising...'});
    });

    test('startReview', () => {
      const sendStub = sandbox.stub(element, '_getChangeURLAndSend')
          .returns(Promise.resolve({}));
      element.startReview('42', {message: 'Please review.'});
      assert.isTrue(sendStub.calledOnce);
      assert.equal(sendStub.lastCall.args[0].changeNum, '42');
      assert.equal(sendStub.lastCall.args[0].method, 'POST');
      assert.isNotOk(sendStub.lastCall.args[0].patchNum);
      assert.equal(sendStub.lastCall.args[0].endpoint, '/ready');
      assert.deepEqual(sendStub.lastCall.args[0].body,
          {message: 'Please review.'});
    });

    test('deleteComment', () => {
      const sendStub = sandbox.stub(element, '_getChangeURLAndSend')
          .returns(Promise.resolve('some response'));
      return element.deleteComment('foo', 'bar', '01234', 'removal reason')
          .then(response => {
            assert.equal(response, 'some response');
            assert.isTrue(sendStub.calledOnce);
            assert.equal(sendStub.lastCall.args[0].changeNum, 'foo');
            assert.equal(sendStub.lastCall.args[0].method, 'POST');
            assert.equal(sendStub.lastCall.args[0].patchNum, 'bar');
            assert.equal(sendStub.lastCall.args[0].endpoint,
                '/comments/01234/delete');
            assert.deepEqual(sendStub.lastCall.args[0].body,
                {reason: 'removal reason'});
          });
    });

    test('createRepo encodes name', () => {
      const sendStub = sandbox.stub(element, '_send')
          .returns(Promise.resolve());
      return element.createRepo({name: 'x/y'}).then(() => {
        assert.isTrue(sendStub.calledOnce);
        assert.equal(sendStub.lastCall.args[0].url, '/projects/x%2Fy');
      });
    });

    test('queryChangeFiles', () => {
      const fetchStub = sandbox.stub(element, '_getChangeURLAndFetch')
          .returns(Promise.resolve());
      return element.queryChangeFiles('42', 'edit', 'test/path.js').then(() => {
        assert.equal(fetchStub.lastCall.args[0].changeNum, '42');
        assert.equal(fetchStub.lastCall.args[0].endpoint,
            '/files?q=test%2Fpath.js');
        assert.equal(fetchStub.lastCall.args[0].patchNum, 'edit');
      });
    });

    test('normal use', () => {
      const defaultQuery = 'state%3Aactive%20OR%20state%3Aread-only';

      assert.equal(element._getReposUrl('test', 25),
          '/projects/?n=26&S=0&query=test');

      assert.equal(element._getReposUrl(null, 25),
          `/projects/?n=26&S=0&query=${defaultQuery}`);

      assert.equal(element._getReposUrl('test', 25, 25),
          '/projects/?n=26&S=25&query=test');
    });

    test('invalidateReposCache', () => {
      const url = '/projects/?n=26&S=0&query=test';

      element._cache.set(url, {});

      element.invalidateReposCache();

      assert.isUndefined(element._sharedFetchPromises[url]);

      assert.isFalse(element._cache.has(url));
    });

    suite('getRepos', () => {
      const defaultQuery = 'state%3Aactive%20OR%20state%3Aread-only';

      setup(() => {
        sandbox.stub(element, '_fetchSharedCacheURL');
      });

      test('normal use', () => {
        element.getRepos('test', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/projects/?n=26&S=0&query=test');

        element.getRepos(null, 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            `/projects/?n=26&S=0&query=${defaultQuery}`);

        element.getRepos('test', 25, 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/projects/?n=26&S=25&query=test');
      });

      test('with blank', () => {
        element.getRepos('test/test', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/projects/?n=26&S=0&query=inname%3Atest%20AND%20inname%3Atest');
      });

      test('with hyphen', () => {
        element.getRepos('foo-bar', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/projects/?n=26&S=0&query=inname%3Afoo%20AND%20inname%3Abar');
      });

      test('with leading hyphen', () => {
        element.getRepos('-bar', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/projects/?n=26&S=0&query=inname%3Abar');
      });

      test('with trailing hyphen', () => {
        element.getRepos('foo-bar-', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/projects/?n=26&S=0&query=inname%3Afoo%20AND%20inname%3Abar');
      });

      test('with underscore', () => {
        element.getRepos('foo_bar', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/projects/?n=26&S=0&query=inname%3Afoo%20AND%20inname%3Abar');
      });

      test('with underscore', () => {
        element.getRepos('foo_bar', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/projects/?n=26&S=0&query=inname%3Afoo%20AND%20inname%3Abar');
      });

      test('hyphen only', () => {
        element.getRepos('-', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            `/projects/?n=26&S=0&query=${defaultQuery}`);
      });
    });

    test('_getGroupsUrl normal use', () => {
      assert.equal(element._getGroupsUrl('test', 25),
          '/groups/?n=26&S=0&m=test');

      assert.equal(element._getGroupsUrl(null, 25),
          '/groups/?n=26&S=0');

      assert.equal(element._getGroupsUrl('test', 25, 25),
          '/groups/?n=26&S=25&m=test');
    });

    test('invalidateGroupsCache', () => {
      const url = '/groups/?n=26&S=0&m=test';

      element._cache.set(url, {});

      element.invalidateGroupsCache();

      assert.isUndefined(element._sharedFetchPromises[url]);

      assert.isFalse(element._cache.has(url));
    });

    suite('getGroups', () => {
      setup(() => {
        sandbox.stub(element, '_fetchSharedCacheURL');
      });

      test('normal use', () => {
        element.getGroups('test', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/groups/?n=26&S=0&m=test');

        element.getGroups(null, 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/groups/?n=26&S=0');

        element.getGroups('test', 25, 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/groups/?n=26&S=25&m=test');
      });

      test('regex', () => {
        element.getGroups('^test.*', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/groups/?n=26&S=0&r=%5Etest.*');

        element.getGroups('^test.*', 25, 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/groups/?n=26&S=25&r=%5Etest.*');
      });
    });

    test('gerrit auth is used', () => {
      sandbox.stub(Gerrit.Auth, 'fetch').returns(Promise.resolve());
      element._fetchJSON('foo');
      assert(Gerrit.Auth.fetch.called);
    });

    test('getSuggestedAccounts does not return _fetchJSON', () => {
      const _fetchJSONSpy = sandbox.spy(element, '_fetchJSON');
      return element.getSuggestedAccounts().then(accts => {
        assert.isFalse(_fetchJSONSpy.called);
        assert.equal(accts.length, 0);
      });
    });

    test('_fetchJSON gets called by getSuggestedAccounts', () => {
      const _fetchJSONStub = sandbox.stub(element, '_fetchJSON',
          () => Promise.resolve());
      return element.getSuggestedAccounts('own').then(() => {
        assert.deepEqual(_fetchJSONStub.lastCall.args[0].params, {
          q: 'own',
          suggest: null,
        });
      });
    });

    suite('getChangeDetail', () => {
      suite('change detail options', () => {
        let toHexStub;

        setup(() => {
          toHexStub = sandbox.stub(element, 'listChangesOptionsToHex',
              options => 'deadbeef');
          sandbox.stub(element, '_getChangeDetail',
              async (changeNum, options) => ({changeNum, options}));
        });

        test('signed pushes disabled', async () => {
          const {PUSH_CERTIFICATES} = element.ListChangesOption;
          sandbox.stub(element, 'getConfig', async () => ({}));
          const {changeNum, options} = await element.getChangeDetail(123);
          assert.strictEqual(123, changeNum);
          assert.strictEqual('deadbeef', options);
          assert.isTrue(toHexStub.calledOnce);
          assert.isFalse(toHexStub.lastCall.args.includes(PUSH_CERTIFICATES));
        });

        test('signed pushes enabled', async () => {
          const {PUSH_CERTIFICATES} = element.ListChangesOption;
          sandbox.stub(element, 'getConfig', async () => {
            return {receive: {enable_signed_push: true}};
          });
          const {changeNum, options} = await element.getChangeDetail(123);
          assert.strictEqual(123, changeNum);
          assert.strictEqual('deadbeef', options);
          assert.isTrue(toHexStub.calledOnce);
          assert.isTrue(toHexStub.lastCall.args.includes(PUSH_CERTIFICATES));
        });
      });

      test('GrReviewerUpdatesParser.parse is used', () => {
        sandbox.stub(GrReviewerUpdatesParser, 'parse').returns(
            Promise.resolve('foo'));
        return element.getChangeDetail(42).then(result => {
          assert.isTrue(GrReviewerUpdatesParser.parse.calledOnce);
          assert.equal(result, 'foo');
        });
      });

      test('_getChangeDetail passes params to ETags decorator', () => {
        const changeNum = 4321;
        element._projectLookup[changeNum] = 'test';
        const params = {foo: 'bar'};
        const expectedUrl =
            window.CANONICAL_PATH + '/changes/test~4321/detail?foo=bar';
        sandbox.stub(element._etags, 'getOptions');
        sandbox.stub(element._etags, 'collect');
        return element._getChangeDetail(changeNum, params).then(() => {
          assert.isTrue(element._etags.getOptions.calledWithExactly(
              expectedUrl));
          assert.equal(element._etags.collect.lastCall.args[0], expectedUrl);
        });
      });

      test('_getChangeDetail calls errFn on 500', () => {
        const errFn = sinon.stub();
        sandbox.stub(element, 'getChangeActionURL')
            .returns(Promise.resolve(''));
        sandbox.stub(element, '_fetchRawJSON')
            .returns(Promise.resolve({ok: false, status: 500}));
        return element._getChangeDetail(123, {}, errFn).then(() => {
          assert.isTrue(errFn.called);
        });
      });

      test('_getChangeDetail populates _projectLookup', () => {
        sandbox.stub(element, 'getChangeActionURL')
            .returns(Promise.resolve(''));
        sandbox.stub(element, '_fetchRawJSON')
            .returns(Promise.resolve({ok: true}));

        const mockResponse = {_number: 1, project: 'test'};
        sandbox.stub(element, '_readResponsePayload').returns(Promise.resolve({
          parsed: mockResponse,
          raw: JSON.stringify(mockResponse),
        }));
        return element._getChangeDetail(1).then(() => {
          assert.equal(Object.keys(element._projectLookup).length, 1);
          assert.equal(element._projectLookup[1], 'test');
        });
      });

      suite('_getChangeDetail ETag cache', () => {
        let requestUrl;
        let mockResponseSerial;
        let collectSpy;
        let getPayloadSpy;

        setup(() => {
          requestUrl = '/foo/bar';
          const mockResponse = {foo: 'bar', baz: 42};
          mockResponseSerial = element.JSON_PREFIX +
              JSON.stringify(mockResponse);
          sandbox.stub(element, '_urlWithParams').returns(requestUrl);
          sandbox.stub(element, 'getChangeActionURL')
              .returns(Promise.resolve(requestUrl));
          collectSpy = sandbox.spy(element._etags, 'collect');
          getPayloadSpy = sandbox.spy(element._etags, 'getCachedPayload');
        });

        test('contributes to cache', () => {
          sandbox.stub(element, '_fetchRawJSON').returns(Promise.resolve({
            text: () => Promise.resolve(mockResponseSerial),
            status: 200,
            ok: true,
          }));

          return element._getChangeDetail(123, {}).then(detail => {
            assert.isFalse(getPayloadSpy.called);
            assert.isTrue(collectSpy.calledOnce);
            const cachedResponse = element._etags.getCachedPayload(requestUrl);
            assert.equal(cachedResponse, mockResponseSerial);
          });
        });

        test('uses cache on HTTP 304', () => {
          sandbox.stub(element, '_fetchRawJSON').returns(Promise.resolve({
            text: () => Promise.resolve(mockResponseSerial),
            status: 304,
            ok: true,
          }));

          return element._getChangeDetail(123, {}).then(detail => {
            assert.isFalse(collectSpy.called);
            assert.isTrue(getPayloadSpy.calledOnce);
          });
        });
      });
    });

    test('setInProjectLookup', () => {
      element.setInProjectLookup('test', 'project');
      assert.deepEqual(element._projectLookup, {test: 'project'});
    });

    suite('getFromProjectLookup', () => {
      test('getChange fails', () => {
        sandbox.stub(element, 'getChange')
            .returns(Promise.resolve(null));
        return element.getFromProjectLookup().then(val => {
          assert.strictEqual(val, undefined);
          assert.deepEqual(element._projectLookup, {});
        });
      });

      test('getChange succeeds, no project', () => {
        sandbox.stub(element, 'getChange').returns(Promise.resolve(null));
        return element.getFromProjectLookup().then(val => {
          assert.strictEqual(val, undefined);
          assert.deepEqual(element._projectLookup, {});
        });
      });

      test('getChange succeeds with project', () => {
        sandbox.stub(element, 'getChange')
            .returns(Promise.resolve({project: 'project'}));
        return element.getFromProjectLookup('test').then(val => {
          assert.equal(val, 'project');
          assert.deepEqual(element._projectLookup, {test: 'project'});
        });
      });
    });

    suite('getChanges populates _projectLookup', () => {
      test('multiple queries', () => {
        sandbox.stub(element, '_fetchJSON')
            .returns(Promise.resolve([
              [
                {_number: 1, project: 'test'},
                {_number: 2, project: 'test'},
              ], [
                {_number: 3, project: 'test/test'},
              ],
            ]));
        // When opt_query instanceof Array, _fetchJSON returns
        // Array<Array<Object>>.
        return element.getChanges(null, []).then(() => {
          assert.equal(Object.keys(element._projectLookup).length, 3);
          assert.equal(element._projectLookup[1], 'test');
          assert.equal(element._projectLookup[2], 'test');
          assert.equal(element._projectLookup[3], 'test/test');
        });
      });

      test('no query', () => {
        sandbox.stub(element, '_fetchJSON')
            .returns(Promise.resolve([
              {_number: 1, project: 'test'},
              {_number: 2, project: 'test'},
              {_number: 3, project: 'test/test'},
            ]));

        // When opt_query !instanceof Array, _fetchJSON returns
        // Array<Object>.
        return element.getChanges().then(() => {
          assert.equal(Object.keys(element._projectLookup).length, 3);
          assert.equal(element._projectLookup[1], 'test');
          assert.equal(element._projectLookup[2], 'test');
          assert.equal(element._projectLookup[3], 'test/test');
        });
      });
    });

    test('_getChangeURLAndFetch', () => {
      element._projectLookup = {1: 'test'};
      const fetchStub = sandbox.stub(element, '_fetchJSON')
          .returns(Promise.resolve());
      const req = {changeNum: 1, endpoint: '/test', patchNum: 1};
      return element._getChangeURLAndFetch(req).then(() => {
        assert.equal(fetchStub.lastCall.args[0].url,
            '/changes/test~1/revisions/1/test');
      });
    });

    test('_getChangeURLAndSend', () => {
      element._projectLookup = {1: 'test'};
      const sendStub = sandbox.stub(element, '_send')
          .returns(Promise.resolve());

      const req = {
        changeNum: 1,
        method: 'POST',
        patchNum: 1,
        endpoint: '/test',
      };
      return element._getChangeURLAndSend(req).then(() => {
        assert.isTrue(sendStub.calledOnce);
        assert.equal(sendStub.lastCall.args[0].method, 'POST');
        assert.equal(sendStub.lastCall.args[0].url,
            '/changes/test~1/revisions/1/test');
      });
    });

    suite('reading responses', () => {
      test('_readResponsePayload', () => {
        const mockObject = {foo: 'bar', baz: 'foo'};
        const serial = element.JSON_PREFIX + JSON.stringify(mockObject);
        const mockResponse = {text: () => Promise.resolve(serial)};
        return element._readResponsePayload(mockResponse).then(payload => {
          assert.deepEqual(payload.parsed, mockObject);
          assert.equal(payload.raw, serial);
        });
      });

      test('_parsePrefixedJSON', () => {
        const obj = {x: 3, y: {z: 4}, w: 23};
        const serial = element.JSON_PREFIX + JSON.stringify(obj);
        const result = element._parsePrefixedJSON(serial);
        assert.deepEqual(result, obj);
      });
    });

    test('setChangeTopic', () => {
      const sendSpy = sandbox.spy(element, '_getChangeURLAndSend');
      return element.setChangeTopic(123, 'foo-bar').then(() => {
        assert.isTrue(sendSpy.calledOnce);
        assert.deepEqual(sendSpy.lastCall.args[0].body, {topic: 'foo-bar'});
      });
    });

    test('setChangeHashtag', () => {
      const sendSpy = sandbox.spy(element, '_getChangeURLAndSend');
      return element.setChangeHashtag(123, 'foo-bar').then(() => {
        assert.isTrue(sendSpy.calledOnce);
        assert.equal(sendSpy.lastCall.args[0].body, 'foo-bar');
      });
    });

    test('generateAccountHttpPassword', () => {
      const sendSpy = sandbox.spy(element, '_send');
      return element.generateAccountHttpPassword().then(() => {
        assert.isTrue(sendSpy.calledOnce);
        assert.deepEqual(sendSpy.lastCall.args[0].body, {generate: true});
      });
    });

    suite('getChangeFiles', () => {
      test('patch only', () => {
        const fetchStub = sandbox.stub(element, '_getChangeURLAndFetch')
            .returns(Promise.resolve());
        const range = {basePatchNum: 'PARENT', patchNum: 2};
        return element.getChangeFiles(123, range).then(() => {
          assert.isTrue(fetchStub.calledOnce);
          assert.equal(fetchStub.lastCall.args[0].patchNum, 2);
          assert.isNotOk(fetchStub.lastCall.args[0].params);
        });
      });

      test('simple range', () => {
        const fetchStub = sandbox.stub(element, '_getChangeURLAndFetch')
            .returns(Promise.resolve());
        const range = {basePatchNum: 4, patchNum: 5};
        return element.getChangeFiles(123, range).then(() => {
          assert.isTrue(fetchStub.calledOnce);
          assert.equal(fetchStub.lastCall.args[0].patchNum, 5);
          assert.isOk(fetchStub.lastCall.args[0].params);
          assert.equal(fetchStub.lastCall.args[0].params.base, 4);
          assert.isNotOk(fetchStub.lastCall.args[0].params.parent);
        });
      });

      test('parent index', () => {
        const fetchStub = sandbox.stub(element, '_getChangeURLAndFetch')
            .returns(Promise.resolve());
        const range = {basePatchNum: -3, patchNum: 5};
        return element.getChangeFiles(123, range).then(() => {
          assert.isTrue(fetchStub.calledOnce);
          assert.equal(fetchStub.lastCall.args[0].patchNum, 5);
          assert.isOk(fetchStub.lastCall.args[0].params);
          assert.isNotOk(fetchStub.lastCall.args[0].params.base);
          assert.equal(fetchStub.lastCall.args[0].params.parent, 3);
        });
      });
    });

    suite('getDiff', () => {
      test('patchOnly', () => {
        const fetchStub = sandbox.stub(element, '_getChangeURLAndFetch')
            .returns(Promise.resolve());
        return element.getDiff(123, 'PARENT', 2, 'foo/bar.baz').then(() => {
          assert.isTrue(fetchStub.calledOnce);
          assert.equal(fetchStub.lastCall.args[0].patchNum, 2);
          assert.isOk(fetchStub.lastCall.args[0].params);
          assert.isNotOk(fetchStub.lastCall.args[0].params.parent);
          assert.isNotOk(fetchStub.lastCall.args[0].params.base);
        });
      });

      test('simple range', () => {
        const fetchStub = sandbox.stub(element, '_getChangeURLAndFetch')
            .returns(Promise.resolve());
        return element.getDiff(123, 4, 5, 'foo/bar.baz').then(() => {
          assert.isTrue(fetchStub.calledOnce);
          assert.equal(fetchStub.lastCall.args[0].patchNum, 5);
          assert.isOk(fetchStub.lastCall.args[0].params);
          assert.isNotOk(fetchStub.lastCall.args[0].params.parent);
          assert.equal(fetchStub.lastCall.args[0].params.base, 4);
        });
      });

      test('parent index', () => {
        const fetchStub = sandbox.stub(element, '_getChangeURLAndFetch')
            .returns(Promise.resolve());
        return element.getDiff(123, -3, 5, 'foo/bar.baz').then(() => {
          assert.isTrue(fetchStub.calledOnce);
          assert.equal(fetchStub.lastCall.args[0].patchNum, 5);
          assert.isOk(fetchStub.lastCall.args[0].params);
          assert.isNotOk(fetchStub.lastCall.args[0].params.base);
          assert.equal(fetchStub.lastCall.args[0].params.parent, 3);
        });
      });
    });

    test('getDashboard', () => {
      const fetchStub = sandbox.stub(element, '_fetchSharedCacheURL');
      element.getDashboard('gerrit/project', 'default:main');
      assert.isTrue(fetchStub.calledOnce);
      assert.equal(
          fetchStub.lastCall.args[0].url,
          '/projects/gerrit%2Fproject/dashboards/default%3Amain');
    });

    test('getFileContent', () => {
      sandbox.stub(element, '_getChangeURLAndSend')
          .returns(Promise.resolve({
            ok: 'true',
            headers: {
              get(header) {
                if (header === 'X-FYI-Content-Type') {
                  return 'text/java';
                }
              },
            },
          }));

      sandbox.stub(element, 'getResponseObject')
          .returns(Promise.resolve('new content'));

      const edit = element.getFileContent('1', 'tst/path', 'EDIT').then(res => {
        assert.deepEqual(res,
            {content: 'new content', type: 'text/java', ok: true});
      });

      const normal = element.getFileContent('1', 'tst/path', '3').then(res => {
        assert.deepEqual(res,
            {content: 'new content', type: 'text/java', ok: true});
      });

      return Promise.all([edit, normal]);
    });

    test('getFileContent suppresses 404s', done => {
      const res = {status: 404};
      const handler = e => {
        assert.isFalse(e.detail.res.status === 404);
        done();
      };
      element.addEventListener('server-error', handler);
      sandbox.stub(Gerrit.Auth, 'fetch').returns(Promise.resolve(res));
      sandbox.stub(element, '_changeBaseURL').returns(Promise.resolve(''));
      element.getFileContent('1', 'tst/path', '1').then(() => {
        flushAsynchronousOperations();

        res.status = 500;
        element.getFileContent('1', 'tst/path', '1');
      });
    });

    test('getChangeFilesOrEditFiles is edit-sensitive', () => {
      const fn = element.getChangeOrEditFiles.bind(element);
      const getChangeFilesStub = sandbox.stub(element, 'getChangeFiles')
          .returns(Promise.resolve({}));
      const getChangeEditFilesStub = sandbox.stub(element, 'getChangeEditFiles')
          .returns(Promise.resolve({}));

      return fn('1', {patchNum: 'edit'}).then(() => {
        assert.isTrue(getChangeEditFilesStub.calledOnce);
        assert.isFalse(getChangeFilesStub.called);
        return fn('1', {patchNum: '1'}).then(() => {
          assert.isTrue(getChangeEditFilesStub.calledOnce);
          assert.isTrue(getChangeFilesStub.calledOnce);
        });
      });
    });

    test('_fetch forwards request and logs', () => {
      const logStub = sandbox.stub(element, '_logCall');
      const response = {status: 404, text: sinon.stub()};
      const url = 'my url';
      const fetchOptions = {method: 'DELETE'};
      sandbox.stub(element._auth, 'fetch').returns(Promise.resolve(response));
      const startTime = 123;
      sandbox.stub(Date, 'now').returns(startTime);
      const req = {url, fetchOptions};
      return element._fetch(req).then(() => {
        assert.isTrue(logStub.calledOnce);
        assert.isTrue(logStub.calledWith(req, startTime, response.status));
        assert.isFalse(response.text.called);
      });
    });

    test('_logCall only reports requests with anonymized URLss', () => {
      sandbox.stub(Date, 'now').returns(200);
      const handler = sinon.stub();
      element.addEventListener('rpc-log', handler);

      element._logCall({url: 'url'}, 100, 200);
      assert.isFalse(handler.called);

      element._logCall({url: 'url', anonymizedUrl: 'not url'}, 100, 200);
      flushAsynchronousOperations();
      assert.isTrue(handler.calledOnce);
    });

    test('saveChangeStarred', async () => {
      sandbox.stub(element, 'getFromProjectLookup')
          .returns(Promise.resolve('test'));
      const sendStub =
          sandbox.stub(element, '_send').returns(Promise.resolve());

      await element.saveChangeStarred(123, true);
      assert.isTrue(sendStub.calledOnce);
      assert.deepEqual(sendStub.lastCall.args[0], {
        method: 'PUT',
        url: '/accounts/self/starred.changes/test~123',
        anonymizedUrl: '/accounts/self/starred.changes/*',
      });

      await element.saveChangeStarred(456, false);
      assert.isTrue(sendStub.calledTwice);
      assert.deepEqual(sendStub.lastCall.args[0], {
        method: 'DELETE',
        url: '/accounts/self/starred.changes/test~456',
        anonymizedUrl: '/accounts/self/starred.changes/*',
      });
    });
  });
</script>
